package com.king.modules.system.controller;

import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

import javax.annotation.Resource;
import javax.imageio.ImageIO;
import javax.servlet.http.HttpServletResponse;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.FastByteArrayOutputStream;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;

import com.google.code.kaptcha.Producer;
import com.king.common.constant.CacheConstants;
import com.king.common.constant.Constants;
import com.king.common.utils.redis.RedisUtil;
import com.king.common.utils.sign.Base64;
import com.king.common.utils.uuid.IdUtils;
import com.king.framework.base.domain.vo.AjaxResult;
import com.king.framework.config.ProjectConfig;
import com.king.framework.security.service.SysLoginService;
import com.king.modules.system.domain.vo.LoginBody;
import com.king.modules.system.service.SysConfigService;

/**
 * 登录验证
 * 
 * @author king
 */
@RestController
@RequestMapping("/system/login")
public class SysLoginController {

	@Autowired
	private SysLoginService loginService;

	@Resource(name = "captchaProducer")
	private Producer captchaProducer;

	@Resource(name = "captchaProducerMath")
	private Producer captchaProducerMath;

	@Autowired
	private RedisUtil redisCache;

	@Autowired
	private SysConfigService configService;

	/**
	 * 登录方法
	 * 
	 * @param loginBody
	 *            登录信息
	 * @return 结果
	 */
	@PostMapping("/login")
	public AjaxResult login(@RequestBody LoginBody loginBody) {
		AjaxResult ajax = AjaxResult.success();
		// 生成令牌
		String token = loginService.login(loginBody.getUsername(), loginBody.getPassword(), loginBody.getCode(),
				loginBody.getUuid());
		Map<String, Object> data = new HashMap<>();
		data.put("username", loginBody.getUsername());
		data.put("usercode", loginBody.getUsername());
		data.put(Constants.TOKEN, token);
		data.put("access_token", token);

		ajax.put("data", data);
		return ajax;
	}

	@PostMapping("/isLogin")
	@ResponseBody
	public AjaxResult isLogin(String username) {
		AjaxResult result = AjaxResult.success();
		result.put("data", false);
		return result;
	}


	/**
	 * 生成验证码
	 */
	@GetMapping("/captchaImage")
	public AjaxResult getCode(HttpServletResponse response) throws IOException {
		AjaxResult ajax = AjaxResult.success();
		boolean captchaEnabled = configService.selectCaptchaEnabled();
		ajax.put("captchaEnabled", captchaEnabled);
		if (!captchaEnabled) {
			return ajax;
		}

		// 保存验证码信息
		String uuid = IdUtils.simpleUUID();
		String verifyKey = CacheConstants.CAPTCHA_CODE_KEY + uuid;

		String capStr = null, code = null;
		BufferedImage image = null;

		// 生成验证码
		String captchaType = ProjectConfig.getCaptchaType();
		if ("math".equals(captchaType)) {
			String capText = captchaProducerMath.createText();
			capStr = capText.substring(0, capText.lastIndexOf("@"));
			code = capText.substring(capText.lastIndexOf("@") + 1);
			image = captchaProducerMath.createImage(capStr);
		} else if ("char".equals(captchaType)) {
			capStr = code = captchaProducer.createText();
			image = captchaProducer.createImage(capStr);
		}

		redisCache.setCacheObject(verifyKey, code, Constants.CAPTCHA_EXPIRATION, TimeUnit.MINUTES);
		// 转换流信息写出
		FastByteArrayOutputStream os = new FastByteArrayOutputStream();
		try {
			ImageIO.write(image, "jpg", os);
		} catch (IOException e) {
			return AjaxResult.error(e.getMessage());
		}

		ajax.put("uuid", uuid);
		ajax.put("img", Base64.encode(os.toByteArray()));

		Map<String, Object> data = new HashMap<>();
		data.put("isValidate", false);
		data.put("loginid", "f290bc86-36f0-4ef5-b44f-0f6c3ce6854c");
		data.put("verifyImg", null);
		ajax.put("data", data);
		return ajax;
	}
}
